From 8a7bd7fa04d77456fe7d2147ea322bffa7f7c958 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Philipp=20H=C3=B6rist?= Date: Sun, 7 May 2017 20:05:27 +0200 Subject: [PATCH] [httpupload] Remove unused code --- httpupload/thumbnail.py | 90 ----------------------------------------- 1 file changed, 90 deletions(-) delete mode 100644 httpupload/thumbnail.py diff --git a/httpupload/thumbnail.py b/httpupload/thumbnail.py deleted file mode 100644 index b55660d..0000000 --- a/httpupload/thumbnail.py +++ /dev/null @@ -1,90 +0,0 @@ -from gi.repository import GdkPixbuf -import base64 -from io import BytesIO -import os -import sys -import logging -from urllib.parse import quote as urlquote -try: - from PIL import Image - pil_available = True -except: - pil_available = False - -log = logging.getLogger('gajim.plugin_system.httpupload.thumbnail') - -def scale_down_to(pixbuf, size): - # Creates a pixbuf that fits in the specified square of sizexsize - # while preserving the aspect ratio - # Returns scaled_pixbuf - image_width = pixbuf.get_width() - image_height = pixbuf.get_height() - - if image_width > image_height: - if image_width > size: - image_height = int(size / float(image_width) * image_height) - image_width = int(size) - else: - if image_height > size: - image_width = int(size / float(image_height) * image_width) - image_height = int(size) - - crop_pixbuf = pixbuf.scale_simple(image_width, image_height, GdkPixbuf.InterpType.BILINEAR) - return crop_pixbuf - - -max_thumbnail_size = 2048 -max_thumbnail_dimension = 160 -base64_size_factor = 4/3 -def thumbnail(path_to_file): - """ - Generates a JPEG thumbnail and base64-encodes, ensuring that the encoded - size is less than max_thumbnail_size bytes. If this is not possible, returns - None. - """ - thumb = None - quality_steps = (100, 80, 60, 50, 40, 35, 30, 25, 23, 20, 18, 15, 13, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1) - # If the whole file is small enough, we'll just use that as a thumbnail - # without downsampling. - if os.path.getsize(path_to_file) * base64_size_factor < max_thumbnail_size: - with open(path_to_file, 'rb') as content_file: - thumb = urlquote(base64.standard_b64encode(content_file.read()), '') - log.info("Image small enough (%d bytes), not resampling" % len(thumb)) - return thumb - elif pil_available: - log.info("PIL available, using it for image downsampling") - try: - for quality in quality_steps: - thumb = Image.open(path_to_file) - thumb.thumbnail((max_thumbnail_dimension, max_thumbnail_dimension), Image.ANTIALIAS) - output = BytesIO() - thumb.save(output, format='JPEG', quality=quality, optimize=True) - thumb = output.getvalue() - output.close() - thumb = urlquote(base64.standard_b64encode(thumb), '') - log.debug("pil thumbnail jpeg quality %d produces an image of size %d...", quality, len(thumb)) - if len(thumb) < max_thumbnail_size: - log.debug("Size is acceptable.") - return thumb - except: - log.info("Exception occurred during PIL downsampling", exc_info=sys.exc_info()) - thumb = None - # If we haven't returned by now we couldn't use PIL for one reason or - # another, so let's pass on to GdkPixbuf - log.info("using GdkPixBuf for image downsampling") - temp_file = None - try: - pixbuf = GdkPixbuf.Pixbuf.new_from_file(path_to_file) - scaled_pb = scale_down_to(pixbuf, max_thumbnail_dimension) - for quality in quality_steps: - success, thumb_raw = scaled_pb.save_to_bufferv("jpeg", ["quality"], [str(quality)]) - log.debug("gdkpixbuf thumbnail jpeg quality %d produces an image of size %d...", - quality, - len(thumb_raw) * base64_size_factor) - if len(thumb_raw) * base64_size_factor < max_thumbnail_size: - log.debug("Size is acceptable.") - return urlquote(base64.standard_b64encode(thumb_raw)) - except: - log.info("Exception occurred during GdkPixbuf downsampling, not providing thumbnail", exc_info=sys.exc_info()) - return None - log.info("No acceptably small thumbnail was generated.")